Mechanical Adjustment; Test Tapes - Sharp QT-50Z Service Manual

1. Turn the drum fully in the direction A shown in Fig. 4-1
and stretch its cord over the parts in the numerical order.
2. The turn the tuning control shaft fully in the direction B
shown in Fig. 4-l and fix its pointer as shown in Fig. 4-2.
ITEM USING JIG ADJUSTMENT REMARKS (CHECK)
I
Driving Tape tention
power megurering
cassette
Torque Torque meter
Play -rw-2111
Fast-forward
Rewind
Azimuth
Tape
MEASUREMENT
MODEL
RANGE
TW-2111
1.5 - log-cm
30 - 200 g-cm
POINTS
More than 150 g
(Play: 30-60 g-cm)
(Rewind :
APPLICATION
Normal : Playback torque
Normal : Back tension
Reverse : Playback torque
Reverse : Back tension
Fast-forward, Rewind torque
Normal : Driving power
Reverse : Driving power
Figure 4-l
RECORD/PLAYBACK
HEAD
PLAY BACK
TEST TAPE
Figure 4-4 TAPE SPEED
CASSETTE TYPE
TITLE MODEL
MTT-111
FLUTTER
MTT-113
AZIMUTH
MTT-118
DISTORTION
MTT-502
BLANK
DUAL-TRACE
HEADPHONES
JACK IRIGHT)
Figure 4-3 AZIMUTH
HEADPHONES
COUNTER
FREQUENCY/
APPLICATION
LEVEL
Tape speed,
3 kHr, -10 -10 Wow and flutter
check
6.3 kHz, -10 dB
8 kHz, -10 d6
adjustment
Distortion check
1 kHz, -10 dB
level adjustment
Tone 200 m&/m level adlustment
Record frequency
check